- All sections
- B - Performing operationstransporting
- B04B - Centrifuges
- B04B 1/20 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
Patent holdings for IPC class B04B 1/20
Total number of patents in this class: 318
10-year publication summary
|
15
|
27
|
17
|
32
|
24
|
27
|
24
|
10
|
18
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Flottweg SE | 92 |
42 |
| GEA Mechanical Equipment GmbH | 242 |
38 |
| Alfa Laval Corporate AB | 1338 |
37 |
| GEA Westfalia Separator Group GmbH | 148 |
19 |
| Tomoe Engineering Co., Ltd. | 42 |
19 |
| Andritz S.A.S. | 24 |
13 |
| Fluid Quip Technologies, LLC | 93 |
10 |
| FLSmidth A/S | 786 |
5 |
| National Oilwell Varco, L.P. | 1702 |
4 |
| 650438 Alberta Ltd. | 4 |
3 |
| Andritz AG | 245 |
3 |
| Derrick Corporation | 256 |
3 |
| GEA Westfalia Separator GmbH | 20 |
3 |
| Hiller GmbH | 14 |
3 |
| Korea Institute of Machinery & Materials | 794 |
3 |
| M-I L.L.C. | 738 |
3 |
| MANN+HUMMEL GmbH | 1812 |
3 |
| Recover Energy Services Inc. | 51 |
3 |
| SIEBTECHNIK GmbH | 12 |
3 |
| Sudzucker Aktiengesellschaft | 130 |
3 |
| Other owners | 98 |